Garden Rose

Rosa × hybrida

Rosaceae · broadleaf deciduous shrub · introduced

Last updated May 23, 2026

Quick Facts

Height

2-8 ft (class-dependent: miniatures 1-2 ft, hybrid teas 4-6 ft, climbers 8-15 ft)

Spread

2-6 ft

Growth Rate

Moderate to fast

Light

Full Sun

Soil

Well Drained

Water

Moderate to high

Hardiness

Zones 4–10 (class and rootstock dependent)

Fall Color

Yellow to bronze (often poor; foliage typically diseased by fall)

Origin

Complex hybrid origin; most modern roses descend from crosses involving R. chinensis

Black SpotHigh

Primary Infection

Downy MildewHigh

Spring New Growth - Early Infection Window

Powdery MildewModerate

Spring Emergence / Primary Infection

Crown GallMonitor

Dormant in Soil

Diseases: Regionally Documented (6)

[NOTE: Diplocarpon rosae causes black spot on roses (Rosa... Black Spot Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Rust (Phragmidium) Botrytis Blight (Gray Mold) Multiple obligate oomycetes (Peronosporaceae); species ar... Downy Mildew Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall

Diseases: Other Associations (1)

Rose Rosette Disease

Pests: Regionally Documented (6)

Aphids Spider Mites Roseslug (Sawfly) Thysanoptera Thrips Agrilus cuprescens Rose Stem Girdler Leafcutter Bees

Pests: Other Associations (1)

Popillia japonica Japanese Beetle

Phenological Calendar

View full calendar (6 stages)

Stage	Typical Window	What to Look For
Dormant pruning window BBCH 00	Feb 1-Feb 28	Leafless canes; dormant buds; traditional Presidents' Day pruning date in the Puget Sound region (mid-February)
Bud break BBCH 07	Mar 1-Mar 31	Red or green buds swelling on canes; first leaf tissue visible at bud tips
First bloom BBCH 61	May 15-Jun 15	First flower buds opening; color visible; fragrance detectable on scented cultivars
Repeat bloom cycles BBCH 65	Jun 15-Oct 15	Continuous or successive bloom flushes on repeat-blooming cultivars; deadheading encourages rebloom
Hip formation BBCH 71	Oct 1-Nov 15	Swelling hips (seed pods) on spent flowers left on the plant; red to orange when ripe
Dormancy BBCH 93	Nov 1-Dec 31	Leaf drop (often accelerated by disease); canes hardening off; cease fertilizing

Cultivars (5)

''Knock Out' series'

Landscape shrub rose, 3-4 ft, continuous bloom spring through frost; single and double forms available in red, pink, coral, yellow

Best choice for low-maintenance roses in Western WA. No spray program needed. Self-cleaning (no deadheading required).

''Double Delight''

Hybrid tea, fragrant bicolor (cream flushed red), 4-5 ft, classic exhibition form

Requires a dedicated spray program in Western WA; not recommended for gardeners unwilling to commit to regular fungicide applications

''Graham Thomas' / 'Golden Celebration''

David Austin English roses, deep yellow (Graham Thomas) / golden apricot (Golden Celebration), fragrant, 4-5 ft, cupped rosette flower form

Popular in Puget Sound gardens for fragrance and flower form. Good compromise between beauty and disease management.

''New Dawn''

Climbing rose, vigorous to 12-15 ft, fragrant pale pink, repeat blooming, very hardy

Proven Puget Sound performer. Excellent on arbors, fences, and walls. Tolerates some shade better than most roses.

''Iceberg''

Floribunda, pure white, prolific clusters, 3-5 ft, light fragrance; also available as a climber ('Climbing Iceberg')

Very common in Puget Sound landscapes. Reliable performer with good repeat bloom. White flowers show thrips damage.

Data Maturity

Baseline Extension data. Expert review underway.